package cn.mzcode.xyzpfuwuduan.common;

import com.google.common.cache.CacheBuilder;
import com.google.common.cache.CacheLoader;
import com.google.common.cache.LoadingCache;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.util.concurrent.TimeUnit;

public class TokenCache {

    private static Logger logger=LoggerFactory.getLogger(TokenCache.class);

    public static final String TOKEN_PREFIX="token_";

    //LRU算法
    private static LoadingCache<String ,String > localCache=CacheBuilder.newBuilder().initialCapacity(1000)
            .maximumSize(10000).expireAfterAccess(12,TimeUnit.HOURS).
                    //默认的数据加载实现，当调用get取值的时候，如果key没有对应的值，就调用这个方法进行加载
                    build(new CacheLoader<String, String>() {
                @Override
                public String load(String s) throws Exception {
                    return "null";
                }
            });

    public static void setKey(String key,String value){
        localCache.put(key,value);
    }
    public static String getKey(String key){
        String value=null;
        try {
            value=localCache.get(key);
            if ("null".equals(value)) {
                return null;
            }
            return value;
        }catch (Exception e){
            logger.error("localCache get error",e);
        }
        return null;
    }
}
